Now showing items 1286-1305 of 1783

  • Platelets: A Multiscale Approach for Recovering Edges and Surfaces in Photon-Limited Medical Imaging 

    Willett, Rebecca; Nowak, Robert David (2001-10-20)
    This paper proposes a new multiscale image decomposition based on platelets. Platelets are localized functions at various scales, locations, and orientations that produce piecewise linear image approximations. Platelets ...
  • Polynomial Root Finding 

    Lang, Markus; Frenzel, Bernhard-Christian (1994-10-01)
    Finding polynomial roots rapidly and accurately is an important problem in many areas of signal processing. We present a program which is superior in speed and accuracy to the best methods to our knowledge, i.e., Jenkins/Traub ...
  • Porous Bead-Based Diagnostic Platforms: Bridging the Gaps in Healthcare 

    Chou, Jie; Wong, Jorge; Christodoulides, Nicolaos; Floriano, Pierre N.; Sanchez, Ximena; McDevitt, John (2012-11-09)
    Advances in lab-on-a-chip systems have strong potential for multiplexed detection of a wide range of analytes with reduced sample and reagent volume; lower costs and shorter analysis times. The completion of high-fidelity ...
  • Post-Compensation of RF Non-Linearity in Mobile OFDM Systems by Estimation of Memory-less Polynomial 

    Guo, Yuanbin; Cavallaro, Joseph R. (2002-05-01)
    The high peak-to-average-power-ratio (PAPR) of OFDM systems introduces inevitable non-linear distortion in the transmitter and causes both in-band distortion and out-of-band spectrum re-growth. In this paper we propose a ...
  • Power efficient broadcast scheduling with delay deadlines 

    Rajan, Dinesh; Sabharwal, Ashutosh; Aazhang, Behnaam (2004-10-01)
    In this paper, we present a framework for the design of minimal power schedulers that satisfy average packet delay bounds for multiple users in a Gaussian wireless broadcast channel. We completely characterize the achievable ...
  • Power efficient transmission policies for multimedia traffic over wireless channels 

    Rajan, Dinesh (2002-04-20)
    The current and future wireless systems need to support a multitude of services with a wide range of data rates and reliability requirements. The limited battery resource at a mobile terminal coupled with the hostile ...
  • Power efficient transmission policies for multimedia traffic over wireless channels 

    Rajan, Dinesh (2002)
    The current and future wireless systems need to support a multitude of services with a wide range of data rates and reliability requirements. The limited battery resource at a mobile terminal coupled with the hostile ...
  • Power issues in communication systems 

    Ahmed, Nasir (2002)
    In this work, we are concerned with power efficient communication techniques for wireless mobile devices. In this direction the effects of nonlinear amplifiers in communications systems are first studied, as they tend to ...
  • Power Issues in Communication Systems 

    Ahmed, Nasir (2002-04-20)
    In this work, we are concerned with power efficient communication techniques for wireless mobile devices. In this direction the effects of nonlinear amplifiers in communications systems are first studied, as they tend to ...
  • Power Optimal Scheduling with Maximum Delay Constraints 

    Khojastepour, Mohammad; Sabharwal, Ashutosh (2003-10-01)
    Most multimedia sources are bursty in nature, a property which can be used to trade queuing delay with the resulting average transmission power [2, 3, 4]. In this paper, we study the relation between average transmission ...
  • Power optimization in multiple transmit antenna communication systems 

    Nallapureddy, Bhaskar Venkat-Vamsee (2004)
    We explore optimal ways of communicating (with a power constraint) over multiple antenna communication systems by managing spatial power distribution. We find that Mutual Coupling (MC), the interaction between antenna ...
  • Power-Efficient Non-coherent Space-Time Constellations 

    Borran, Mohammad Jaber; Sabharwal, Ashutosh; Aazhang, Behnaam (2003-07-20)
    We consider the problem of digital communication in a Rayleigh flat-fading environment using a multiple-antenna system, when the channel state information is available neither at the transmitter nor at the receiver. It ...
  • A Pre-Clinical Framework for Neural Control of a Therapeutic Upper-Limb Exoskeleton 

    Blank, Amy; O'Malley, Marcia K.; Francisco, Gerard E.; Contreras-Vidal, Jose L. (2013)
    In this paper, we summarize a novel approach to robotic rehabilitation that capitalizes on the benefits of patient intent and real-time assessment of impairment. Specifically, an upper-limb, physical human-robot interface ...
  • Preamble-based Symbol Timing Estimation for Wireless OFDM Systems 

    Gadhiok, Manik; Cavallaro, Joseph R. (2007)
    We propose a timing estimation scheme that reduces computational complexity while achieving performance comparable to the autocorrelation method commonly employed at the wireless receiver. The proposed method is based ...
  • Preamble-based Symbol Timing Estimation for Wireless OFDM Systems 

    Gadhiok, Manik; Cavallaro, Joseph R. (2007-11-01)
    We propose a timing estimation scheme that reduces computational complexity while achieving performance comparable to the autocorrelation method commonly employed at the wireless receiver. The proposed method is based on ...
  • Predicting internal cell fluxes at sub-optimal growth 

    Schultz, André; Qutub, Amina A. (2015)
    Background: Flux Balance Analysis (FBA) is a widely used tool to model metabolic behavior and cellular function. Applications of FBA span a breadth of research from synthetic engineering of biofuels to understanding ...
  • Prediction of heart rate response to conclusion of spontaneous breathing trial by fluctuation dissipation theory 

    Chen, Man; Niestemski, Liang Ren; Prevost, Robert; McRae, Michael; Cholleti, Sharath; Najarro, Gabriel; Buchman, Timothy G.; Deem, Michael W. (2013-02)
    The non-equilibrium fluctuation dissipation theorem is applied to predict how critically ill patients respond to treatment, based upon data currently collected by standard hospital monitoring devices. This framework is ...
  • Prediction of heart rate response to conclusion of the spontaneous breathing trial by fluctuation dissipation theory 

    Chen, Man; Niestemski, Liang Ren; Prevost, Robert; McRae, Michael; Cholleti, Sharath; Najarro, Gabriel; Buchman, Timothy G.; Deem, Michael W. (2013)
    The non-equilibrium fluctuation dissipation theorem is applied to predict how critically ill patients respond to treatment, based upon data currently collected by standard hospital monitoring devices. This framework is ...
  • Preferential Location of Germanium in the UTL and IPC-2a Zeolites 

    Odoh, Samuel O.; Deem, Michael W.; Gagliardi, Laura (2014-10-28)
    The preferential location of Ge in the double four-membered rings (D4R) of zeolite UTL has been examined with periodic density functional theory calculations. In silicate UTL, Ge atoms are preferentially sited at the T1 ...
  • Principle and practice of optical code-division multiple access communication 

    Nguyen, Lim (1996)
    This research examines the theoretical and experimental aspects of code-division multiple access (CDMA) communication in the incoherent, or direct detection, optical domain. We develop new modulation and detection principles ...